Sorry for the tone here (unusually snarky comment). Arguably, my point was that this argument, biasing your analysis by hidden motives that cannot be disproven

Sorry for the tone here (unusually snarky comment). Arguably, my point was that this argument, biasing your analysis by hidden motives that cannot be disproven, is invalid. But clearly, I was wrong because fast.ai's courses are indeed free so the comparison doesn't stand. I'll also add that fast.ai has great ML courses that go deep into details, and focus on practical, applicable, techniques. My comment was specifically about the argument that Google is doing this just to increase Cloud revenues.